Intercom
来自Big Physics
Safin（讨论 | 贡献）2022年4月27日 (三) 16:10的版本 （建立内容为“Category:etymology == google == [https://www.google.com.hk/search?q=intercom+etymology&newwindow=1&hl=en ref] Second World War: abbreviation of intercommunic…”的新页面）
Second World War: abbreviation of intercommunication.
wiktionary
Clipping of intercommunicator.
etymonline
intercom (n.)
"radio or telephone intercommunication system," 1937, colloquial shortening of intercommunication, which is attested from 1911 in reference to systems of linked telephones.
